File type is JPEG, a compressed image format that uses variable rate lossy compression to reduce file size and transfer time.Slides #402 through #408 vary pixel dimensions while keeping all other parameters roughly constant.Inspect this image folder in Adobe Bridge.Copy and extract Parsons / Outbox / PHL20090824resolution.zip onto Desktop.Compute pixels per inch (ppi) based on image size. The fundamental dimensions of a digital image are in pixels (width x height), not inches or centimeters.Analog light amplitude (intensity) and frequency (color) translate to bit-level descriptions via quantization.How much resolution in bits at each sensor?.The number of virtual sensors = pixel width x height.Each pixel is a conceptual set of sensors, e.g., one sensor per red, green and blue.Transform the image in Photoshop, not the camera, unless capture-time transforms help you to see.You can add new information via a software tool.You can subtract information concerning the original image with a software tool.You cannot add information concerning the original image with a software tool.Brightness, contrast, resolution, focus, depth of field.You start with only as much information as you capture with the original photo or scan.CSC/FAR 020, Computer Graphics, September 2-3, 2014 Dr.
